Check out EDDMapS.org to see where this has been reported.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Vitales
WEAKLEY'S FLORA (5/21/15):
Causonis japonica FAMILY Vitaceae
PLANTS NATIONAL DATABASE:
Cayratia japonica FAMILY Vitaceae
Flora of North America
Bushkiller, Sorrel Vine
Click or hover over the thumbnails to see larger pictures.
Robert J. Richardson, North Carolina State University, Bugwood.org bug_2105065
Salmon-colored flowers develop in umbels. Fruits are black or white berries, per www.invasive.org.
Robert J. Richardson, North Carolina State University, Bugwood.org bug_2105066
Each leaf has 5 ovate to orbicular leaflets. A tendril is opposite each leaf, per www.invasive.org.